Stirmp-extractob



UNITED STAT FRANCIS M. EAGLE, OF NORTH MANCHESTER, INDIANA.

STUMP-EXTRACTOR.

Specification of Letters Patent No. 22,415, dated December 28, 1858.

To all whom it may concern:

Be it known that I, FRANCIS M. EAGLE, of North Manchester, in the countyof Vabash and State of Indiana, have invented a new and usefulImprovement in Stump-Extractors; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawing, forming part of this speer cation, inthe several figures of which similar characters of reference denote thesame part.

Figure l is a top view of the machine. Fig. 2 is a front view of thesame.

It will be observed that this machine consists of a stout frame, aroller with a rope, a large link, clevis and chain or hook, and twowheels to facilitate the moving of the machine.

S and Sg] are the sills or sled runners as the lower corner of both endsare taken off they lie parallel with the right ends even.

LP, and HP, are perpendicular posts. LP is about five feet long from thebottom of sill Sy. HP is about eight feet high from the bottom of itssill s.

B71 Br is bracing in any length to suit their posts. (The strain on themis light.)

B B are beams which are the fulcrum part of the machine and should be offirm solid dry oak. These beams B B extend each from the upper outeredge of post LP to the upper and outer edge of post HP, the upper edgeof the beams B B being even with the upper end of posts LP and HP, andare let into said posts two inches, one beam on each side, and are therefirmly fastened by bolts. These beams B B on their upper edges may beeither straight,the segment of any disk, or spirally direct line whichhas a continual departure from the supposed place under the machinewhere the part of the stump or body fastened to by the hook, or chain,is; and which must be between the post LP, and its half distance to postHP; the higher you wish to lift the weight, or, in other words, thefurther you wish it to be moved from its position by one passage of theroller Ro along the whole length of the beams B B then the closer itshould start from the post LP. The post HP is not necessarily eight feethigh but may be of innumerable lengths, but

should be shorter when the beams are the segment of a circle and longerwhen they are straight, and depart outside of a tangent.

CB is cross bracing, with two short braces CB, which should be put on bypins so as to be easily taken olf, as its only use is to keep the runnersteady when the machine is drawn by a team, and which can frequently bedispensed with when the ground is even and the distance not great, orthese braces may be fastened on in any ordinary manner considering thesills Sy and S a sled. y

The wheels IV are made of plank, and banded with iron, and revolve on atwo inch iron axle fastened in the pests twelve inches from the bottomof their respective sill, and on the outside of the post H and LP. Thewheels are secured by a linch pin in the axle; the only use of thesewheels is in moving the machine.

X X are bars of iron laid on and along the upper edges of beams B B, oneon each, they are firmly fastened thereon by iron pins and hooking thebars inch down over the ends of the beams B B at post HP, and so thattheir upper edge will present a smooth surface for roller R0, to rollover.

The hook CZ, is made of wood or iron and is to lay the rope BB in, andis so made and placed that it holds the upper edge of the rope RR evenwith the upper edge of the bars X X, and that by driving a wedge throughit therope will be confined in it. B0, is the roller of cast or wroughtiron and is forty two (42) inches long, four inches of the length ofeach outer end is three inches square to receive the levers L L L L andbalance wheel BW, said wheel being equal in weight to the lever L; thenext eleven inches from both ends of said roller toward its middle, isround, and three inches in diameter (the same diameter of the bearingparts of it), having a hemispherical screw gutter seven-eighths inchwide, and three-eighths deep (viz. one-half the diameter of the rope RR)sunk in it, both gutters or screws leading toward said middle and makingtwelve revolutions around said rollers (one being known as a right andthe other as a left screw); the next half inch toward said middle isfour inches in circumference and forms the flange of one-half inch highseen on the outsides of bars X X; the next three inches is round and isthree inches in diameter, and is the part of the roller that rolls andbears upon the bars X X. The next one-half inch are round and fourinches in diameter, and from the flanges seen on the inside of bars X X;the middle three inches are round, three inches in diameter, and is thepart that revolves in the link. L L L L are levers extending from thescrew; they are made of oak, elm, or other firm wood. They can be placedon either end of the roller by changing the braces Br and balance wheelto the opposite end of the roller.

The end of the roller R0 having the left screw on it is placed to theright of the bars X X when looking from the post LP; the end having theright screw to their left, and with the bearing part of the roller R0,on the bars X X.

RR, is a three fourth inch rope twenty one feet long, fastened in a holethrough the balance Wheel; as close to the screw as possible, thenextending around through hook CZ, in which it can be fastened by a wedgeto prevent its slipping when the machine is in operation; it thenextends to the lever L at its nearest point to the screw and passes outthrough a hole in the lever L in which hole it can be fastened by awedge.

The link L is made of an iron bar (known as wagon tire iron), doubledand welded at the ends; the bend at the upper end should correspond tothe three inch roller; the inside of the link bearing on the roller Ro,should be laid with steel or other anti-friction metal. The link nearthe roller should be made heavy to prevent its binding on the rollerwhen under a great strain. There should be a four inch space leftbetween the sides of the link, eighteen inches below the roller bearing,which should be kept from drawing closer by a block of wood or metal,its use is to be able to slip the link over the flanges of the roller R0when necessary. The sides of the link near its opposite or lower endshould be about one and a half inches apart, for the purpose of slippingwedges between to tighten the clevis C toward the roller Ro. The clevisC is made of three fourth inch square iron. The hook H should be heavy,viz. short and thick, and should weigh about 35 pounds. Said hook H isattached to the roller R0 links L and clevis C, by said clevis passingthrough its eye, and so of a chain. The beams stand parallel to eachother and are four inches apart. There should be several clevises madeand of different lengths to suit any distance to the hook from the link.The above description has been given where a rectilinear track is usedfor the roller.

My invention is not confined to this construction however, as the trackmay be a curve or a combined plane and curve, and in general terms maybe stated as having all points except that at which the roller starts,exterior to a circle described from the attachment of the hook to thestump as a center with the invariable connection between stump androller as a radius; except the movement of the roller is in thedirection of the line passing through the point of attachment of thehook and starting point of the roller. Tf desired this track and theroller may be cogged.

l will now proceed to give the operation of the stump extractor asfollows: Place the machine over the stump with the space between beams BB, directly over that part of the stump to be fastened to by the hook orchain for the purpose of extracting it. Roll the roller R0 back towardthe post LP until the roller is at its shortest possible distance fromthe hook H when fastened to the root or body to be raised. For to raiseit then attach the hook H, clevis C and link L, to the roller R0 bymeans of a wedge or wedges, driven through the clevis C and link L; thentake hold of the lower end of a lower lever, draw it in direction ofpost LP, at the same time it will cause the roller R0 to pass up thebars X X, toward their end at CZ. At the same time the roller R0 willVdraw the part of the stump or body fasstump or body so that it cannotsink; then roll the roller back as in starting at first, take up theslack in the connections by driving additional wedges through the clevisand link L so as to stretch them as tight as possible, and so on if itstalls other times. The machine has its greatest powers at first, andwould raise 60 tons one fourth inch, when it would stall when liftingfour tons at the end of three feet raise, this so of the medium. Theother modifications can have the comparative ratio, but the greater canbe made to pull equally at all distances of raise, the beams taking theform of an inclined plane laid around a circle. The greater body of thestump should be on the balance wheel side of the beams.

I do not claim any construction in which the movement of the stump isthe same as that of the power; but

1What I do claim, is-

Overcoming the resistance by the movement of a roller invariablyconnected with the stump substantially as described upon a track eitherrectilinear or curved, all parts of which except the starting part ofthe signed my name before two subscribing Witroller are exterior to acircle with the inmesses.

variable connection for a radius and the point of attachment of the hookfor a cen- FRANCIS M' EAGLE 5 ter; the operation being substantially asde- Vitnesses:

scribed. JAS. D. CLARY,

In testimony whereof I have hereunto JOHN S. HOLLINGSHEAD.

